C++ Address::GetModule方法代码示例

bool lldb_private::operator>(const Address &lhs, const Address &rhs) {
  ModuleSP lhs_module_sp(lhs.GetModule());
  ModuleSP rhs_module_sp(rhs.GetModule());
  Module *lhs_module = lhs_module_sp.get();
  Module *rhs_module = rhs_module_sp.get();
  if (lhs_module == rhs_module) {
    // Addresses are in the same module, just compare the file addresses
    return lhs.GetFileAddress() > rhs.GetFileAddress();
  } else {
    // The addresses are from different modules, just use the module
    // pointer value to get consistent ordering
    return lhs_module > rhs_module;
  }
}

bool
Variable::LocationIsValidForAddress (const Address &address)
{
    // Be sure to resolve the address to section offset prior to 
    // calling this function.
    if (address.IsSectionOffset())
    {
        SymbolContext sc;
        CalculateSymbolContext(&sc);
        if (sc.module_sp == address.GetModule())
        {
            // Is the variable is described by a single location?
            if (!m_location.IsLocationList())
            {
                // Yes it is, the location is valid. 
                return true;
            }
            
            if (sc.function)
            {
                addr_t loclist_base_file_addr = sc.function->GetAddressRange().GetBaseAddress().GetFileAddress();
                if (loclist_base_file_addr == LLDB_INVALID_ADDRESS)
                    return false;
                // It is a location list. We just need to tell if the location
                // list contains the current address when converted to a load
                // address
                return m_location.LocationListContainsAddress (loclist_base_file_addr, 
                                                               address.GetFileAddress());
            }
        }
    }
    return false;
}

uint32_t
ModuleList::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc) const
{
    // The address is already section offset so it has a module
    uint32_t resolved_flags = 0;
    ModuleSP module_sp (so_addr.GetModule());
    if (module_sp)
    {
        resolved_flags = module_sp->ResolveSymbolContextForAddress (so_addr,
                                                                    resolve_scope,
                                                                    sc);
    }
    else
    {
        Mutex::Locker locker(m_modules_mutex);
        collection::const_iterator pos, end = m_modules.end();
        for (pos = m_modules.begin(); pos != end; ++pos)
        {
            resolved_flags = (*pos)->ResolveSymbolContextForAddress (so_addr,
                                                                     resolve_scope,
                                                                     sc);
            if (resolved_flags != 0)
                break;
        }
    }

    return resolved_flags;
}

static bool
GetByteOrderAndAddressSize (ExecutionContextScope *exe_scope, const Address &address, ByteOrder& byte_order, uint32_t& addr_size)
{
    byte_order = eByteOrderInvalid;
    addr_size = 0;
    if (exe_scope == NULL)
        return false;

    TargetSP target_sp (exe_scope->CalculateTarget());
    if (target_sp)
    {
        byte_order = target_sp->GetArchitecture().GetByteOrder();
        addr_size = target_sp->GetArchitecture().GetAddressByteSize();
    }

    if (byte_order == eByteOrderInvalid || addr_size == 0)
    {
        ModuleSP module_sp (address.GetModule());
        if (module_sp)
        {
            byte_order = module_sp->GetArchitecture().GetByteOrder();
            addr_size = module_sp->GetArchitecture().GetAddressByteSize();
        }
    }
    return byte_order != eByteOrderInvalid && addr_size != 0;
}

int Address::CompareModulePointerAndOffset(const Address &a, const Address &b) {
  ModuleSP a_module_sp(a.GetModule());
  ModuleSP b_module_sp(b.GetModule());
  Module *a_module = a_module_sp.get();
  Module *b_module = b_module_sp.get();
  if (a_module < b_module)
    return -1;
  if (a_module > b_module)
    return +1;
  // Modules are the same, just compare the file address since they should
  // be unique
  addr_t a_file_addr = a.GetFileAddress();
  addr_t b_file_addr = b.GetFileAddress();
  if (a_file_addr < b_file_addr)
    return -1;
  if (a_file_addr > b_file_addr)
    return +1;
  return 0;
}

bool
DWARFCallFrameInfo::GetUnwindPlan (Address addr, UnwindPlan& unwind_plan)
{
    FDEEntryMap::Entry fde_entry;

    // Make sure that the Address we're searching for is the same object file
    // as this DWARFCallFrameInfo, we only store File offsets in m_fde_index.
    ModuleSP module_sp = addr.GetModule();
    if (module_sp.get() == nullptr || module_sp->GetObjectFile() == nullptr || module_sp->GetObjectFile() != &m_objfile)
        return false;

    if (GetFDEEntryByFileAddress (addr.GetFileAddress(), fde_entry) == false)
        return false;
    return FDEToUnwindPlan (fde_entry.data, addr, unwind_plan);
}

bool
Variable::DumpLocationForAddress (Stream *s, const Address &address)
{
    // Be sure to resolve the address to section offset prior to 
    // calling this function.
    if (address.IsSectionOffset())
    {
        SymbolContext sc;
        CalculateSymbolContext(&sc);
        if (sc.module_sp == address.GetModule())
        {
            ABI *abi = nullptr;
            if (m_owner_scope)
            {
                ModuleSP module_sp (m_owner_scope->CalculateSymbolContextModule());
                if (module_sp)
                    abi = ABI::FindPlugin (module_sp->GetArchitecture()).get();
            }

            const addr_t file_addr = address.GetFileAddress();
            if (sc.function)
            {
                if (sc.function->GetAddressRange().ContainsFileAddress(address))
                {
                    addr_t loclist_base_file_addr = sc.function->GetAddressRange().GetBaseAddress().GetFileAddress();
                    if (loclist_base_file_addr == LLDB_INVALID_ADDRESS)
                        return false;
                    return m_location.DumpLocationForAddress (s, 
                                                              eDescriptionLevelBrief, 
                                                              loclist_base_file_addr, 
                                                              file_addr,
                                                              abi);
                }
            }
            return m_location.DumpLocationForAddress (s, 
                                                      eDescriptionLevelBrief, 
                                                      LLDB_INVALID_ADDRESS, 
                                                      file_addr,
                                                      abi);
        }
    }
    return false;
}

bool
DWARFCallFrameInfo::GetAddressRange (Address addr, AddressRange &range)
{

    // Make sure that the Address we're searching for is the same object file
    // as this DWARFCallFrameInfo, we only store File offsets in m_fde_index.
    ModuleSP module_sp = addr.GetModule();
    if (module_sp.get() == nullptr || module_sp->GetObjectFile() == nullptr || module_sp->GetObjectFile() != &m_objfile)
        return false;

    if (m_section_sp.get() == nullptr || m_section_sp->IsEncrypted())
        return false;
    GetFDEIndex();
    FDEEntryMap::Entry *fde_entry = m_fde_index.FindEntryThatContains (addr.GetFileAddress());
    if (!fde_entry)
        return false;

    range = AddressRange(fde_entry->base, fde_entry->size, m_objfile.GetSectionList());
    return true;
}

static bool
ReadAddress (ExecutionContextScope *exe_scope, const Address &address, uint32_t pointer_size, Address &deref_so_addr)
{
    if (exe_scope == NULL)
        return false;


    bool success = false;
    addr_t deref_addr = ReadUIntMax64 (exe_scope, address, pointer_size, success);
    if (success)
    {
        ExecutionContext exe_ctx;
        exe_scope->CalculateExecutionContext(exe_ctx);
        // If we have any sections that are loaded, try and resolve using the
        // section load list
        Target *target = exe_ctx.GetTargetPtr();
        if (target && !target->GetSectionLoadList().IsEmpty())
        {
            if (target->GetSectionLoadList().ResolveLoadAddress (deref_addr, deref_so_addr))
                return true;
        }
        else
        {
            // If we were not running, yet able to read an integer, we must
            // have a module
            ModuleSP module_sp (address.GetModule());

            assert (module_sp);
            if (module_sp->ResolveFileAddress(deref_addr, deref_so_addr))
                return true;
        }

        // We couldn't make "deref_addr" into a section offset value, but we were
        // able to read the address, so we return a section offset address with
        // no section and "deref_addr" as the offset (address).
        deref_so_addr.SetRawAddress(deref_addr);
        return true;
    }
    return false;
}